fig7

Figure 7. Wearable oxygen sensing devices for wound healing. (A) Calibration plot of wire sensor for dissolved oxygen concentration with inset of the optical image of oxygen sensor looped around finger. Reproduced with permission^[69]. Copyright 2021, Royal Society of Chemistry. (B) Mechanism for generating and sensing oxygen using flexible smart dressing. (C) Fluorescence lifetime changes with increased dissolved oxygen concentration from 1-layer sensing dye. Reproduced under the terms and conditions of the CC BY 4.0^[70]. Copyright 2020, The Author(s), published by Nature. (D) Optical image of printed reflectance oximeter array. (E) Saturated Oxygen concentration changes over time, and 2-D contour maps of red, NIR, and saturated oxygen concentration change under normal conditions (t = 0 s), under ischemia (t = 60, 120 s), and after releasing pressure (t = 180, 240, 300 s). Reproduced under the terms and conditions of the CC BY-NC-ND 4.0^[71]. Copyright 2018, Author(s), published by Proceedings of the National Academy of Sciences USA.